Brake mechanism



Sept. 3, 1940. w. H. SEELEY BRAKE MECHANISM Filed April 4. 1939 ATTORNEY Patented Sept. 3, 1940 ants PAENT 4 Glaims.

The invention relates to improvements in a brake mechanism and mounting for drums in card filing devices as described in the present specification and illustrated in the accompanying drawing that forms a part of the same.

The invention consists essentially in devising a brake mechanism introduced within a drum and which may be disengaged or engaged by means connected with the mechanism and operated exteriorly thereof and a mounting for the drum as pointed out broadly and specifically in the claims for novelty following an explanation in detail of an acceptable form of the invention.

The objects of the invention are to devise a means whereby a rotatable member for supporting the cards may be adjusted with regards to its rotation and thereby greatly facilitate matters for the user in handling the cards which are mounted on the drum or drums; to devise a means of checking the rotation of the drum which is concealed and thereby protected from dirt, dust or other foreign particles and at the same time to provide a means which can control the checking means and accessible exteriorly to the drum; to furnish a filing device with a suitable mounting and brake mechanism so that cards may be easily removed and placed in proper position on the device without disturbing the remaining cards; to furnish a filing device in which the cards will be immediately available and may be shifted to wherever it is more convenient for use; to construct a means whereby the device will be provided with a checking 5 mechanism that will retain the required index card or cards in a rigid position and avoiding the possibility of the cards rolling backwards; and generally to provide a brake mechanism and mounting for drums in card filing devices which will be efiicient in operation, composed of comparatively few parts, and durable in construction.

In the drawing,

Figure l is a front elevation showing a roll type filing cabinet.

Figure 2 is an end elevation of the roll type filing cabinet.

Figure 3 is a vertical sectional View taken on the lines 33, in Figure 2 and showing the arrangement and mounting of the wheels for holding the cards.

Figure 4. is an enlarged fragmentary sectional view Showing the brake mechanism in one of the wheels.

Figure 5 is an enlarged fragmentary perspective View of the brake mechanism and brake drum having the card index drum removed.

Figure 6 is a fragmentary side sectional view of the brake drum and its engaging member.

Like numerals of reference indicate the corresponding parts of the drawing. 7

Referring to the drawing the card filing device consists of one or more rotatable members as indicated by the numeral 255 and which is introduced in a desklike cabinet 26 having a roll back top 21, although it is understood that these rotatable members 25 may be introduced in any form of desk or table, or may be composed of a single unit that may be placed on the desk or other convenient place.

The card filing device is in the form of a drum 28 having its sides closed in by the side plates 29 and 3B which are secured together by tie rods 3! and these side plates flange outwardly at their periphery at 32 for engagement with the drum 28 and held in position thereto by means of the aforementioned tie rods.

The side plates 29 and 39 are provided with the end bearing members 33 containing the hearing 4!] for engagement with the non-rotatable shaft 4| which extends through the card drum 28 and the end bearing members 33. The collars 42, which are provided with screw threaded orifices, encircle the shaft 4! and are adapted to abut the end bearing members and are held in a fixed position with relation to the shaft by means of the said screws 43 which engage with the threaded orifices of the collars and are brought into contact with the shaft.

The brake mechanism is introduced within the drum 28 and centrally deposed therein between the side plates 29 and 3t and consist of the brake drum 44 which is internally toothed to form an internal ratchet gear and is provided with the side plates 45 and 45 which are secured together by the adjustable screws 4? and it. The shaft 4| which extends through the side plates 45 and 4B and the brake drum 44 has the orifice which is so situated on the shaft as to be positioned in an approximately central position within the brake drum 44 and thisorifice is engaged by the pawl 50 which is simply loosely mounted through the orifice 49 of the shaft so that the lower end of the pawl will come into engagement with the interior ratchet formation of the brake drum and it will be noted that this pawl which may be in the form of a pin suitably shaped at the bottom for engagement with the ratchet is preferably placed in a vertical position within the drum and this will enable the they also form the maximum release for the side plates when they are loosened from engagement with the brake drum by means of the adjustable,

screws ll and 48.

The side plate 45 of the brake drum 44 is further kept in its aligningposition by means of the sleeves 53 and 55 which encircle a portion of the adjustable screws i'i and 43 and extend outwardly beyond the side plate 29 of the card holding drum, and the adjustable screws 4'8 and 48 terminate in the nuts 55 and 56 which are adapted to be moved by hand or other instrument for tightening or loosening the side plates 45 and 36 in relation to the brake drum M and prevented from being entirely removed from the brake drumby the retaining nuts 35 and 36.

It will therefore be seen that if it is desired that the card holding drum be rotated in one direction only the adjustable screws 5'! and #38 are tightened so as to firmly engage the side plates 45 and iii to the brake drum M. Therefore upon rotating the card drum in one direction this will cause the brake drumto rotate also, but if an attempt is made to turn the card drum in the opposite direction, then the brake drum will be resisted from turning in the same direction owing to the pawl engaging with the, ratchet therein and as the pawl engages with the non-rotatable shaft, the card drum is bound to stop its rotation. On the other hand if itis desired for one purpose or another to rotate the card drum in either directions, then all that is necessary to be done issimply to loosen the adjustable screws ll and 48 which has the effect of loosening the side plates 415 and 46 from the brake drum d l. Consequently when the card drum is rotated inone or other directions the side plates 45 and ifi will rotate and as they are not connected with the brake drum M the brake drum will have no effect upon the rotation of the card drum. The means for mounting the card drum or drums into its or their cabinet naturally depends on the form of container in which the card drum is to be inserted.

What I claim is:

1. In a brake mechanism and drum mounting for card filing devices, a housing, a non-rotatable shaft suitably secured to said housing, a card drum rotatably mounted on said non-rotatable shaft, a brake drum mounted on said nonrotatable shaft and forming an interior ratchet, a pawl introduced through an orifice of said noncard drum rotatably mounted on said non-rotat-- able.shaft, a brake drum mounted on said nonrotatable shaft and having its inner circumference in the form of a ratchet gear, a pin engaging and extending through an orifice of said non-rotatable shaft and having its lower end in contact with the ratchet gear of said drum, side plates forming friction plates mounted on said non-rotatable shaft and engaging with the sides of said brake drum, sleeves extending through one wall of said card drum and abutting one of said side plates, and adjustable members eX- tending through said sleeves and through both of said side plates and adapted to be manually operated for engaging and disengaging the side plates from said brake drum.

3. In a brake mechanism and drum mounting for card filing devices, a housing, a card drum closed in at the sides by side plates and locked together through tie rods, said side plates having bearing members and bearings, a non-rotatable shaft suitably secured to said housing and extending through said card drum and supporting the same through the bearings and bearing members of the side plates of said card drum, a brake,

drum having on its inner circumference a ratchet and having friction plates on each side thereof and supported thereby on said nonrotatable shaft, a pin introduced within the bra-ire drum and extending through an orificeof said non-rotatable shaft and engaging at its lower end with the ratchet of said brake drum and means for tightening and loosening the side plates of said brake drum in relation to the brake drum and the side walls of said card drum.

4. In a brake mechanism and drum mounting for card filing devices, a housing, a non-rotatable shaft adjustably secured at the ends to said housing, a card drum rotatably mounted on said non-rotatable shaft, a brake drum having an internal ratchet gear and side plates forming friction plates and mounted on said non-rotatable shaft, a pawl extending through an orifice of said shaft and engaging with theinternal ratchet gear of said brake drum, means connecting said brake drum through the friction plates to one of the walls of said card drum and means co-operating with the aforesaid means for engaging and disengaging the brake drum with said card drum.

HILLIAIM HARVEY SEELEY. 

